Error Message while establishing HP printer via WLAN - Fritzbox (Repeater)

Hello,

I want to print from my new macbook pro via wlan. My HP laserjet printer 1200 is connected to a USB-port on my fritzbox (repeater) ip no. 192.168.178.10.

If I want to create the printer on my macbook pro, I use the

a) IP address: 192.168.178.10

b) protocol: HP Jetdirect - Socket

c) Queue: I leave blank

Use: Generic postscript printer - or other possibilities

After press "add" I got the message:

"Unable to verify the printer on your network. Unable to connect to '192.168.178.10' due to an error. Would you still like to create the printer?"

If I create the printer, the HP printer doesn't react, if I like to print e.g. a document.

Hint: This printer is working with a windows 7 supported AVM-fritzbox software (Fern...) on windows computers without any problem.

Thank you in advance for your support,

Best regards,

T.F. Steck